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hi, You have to note that y=mx+b is a linear equation, so the graph is a straight line. In order to build the graph, you have to plug in values for x, and find the values for y. For tracing the line, it's necessary to have two points. That means having 4 coordinates. You know that a point is defined by its coordinate (x,y). y=5x-6 For x = 0 y = 5*0 -6 y = -6 The point has the following coordinates: (0,-6) For x = -1 y = 5*(-1) -6=-5-6=-11 The point has the following coordinates: (-1,-11) Now, in order to graph, trace the system of coordinates, which means two rectangular axes. ox is perpendicular to oy. Choose an unit of measure (for example, if you're working on a math sheet, a unit of measure could be the square from the page) The negative values, on ox axis, are on the left side and the positive values are on the right side. In the middle of the axis is origin, which has coordinates (0,0). The negative values, on oy axis, are above origin, and negative values are below origin. For the point (-1,-11), on ox axis, number 1 square on the left side and, for oy axis, number 11 squares below origin.
ok thank you very much
additional information...there are three ways to graph functions...1) the most flexible...the plotting of points..the focus of this method is to set 2 or more values of x (3 or more is better) then solve for y for each value of x. this will give you 2 or more ordered pairs. Plot these three pairs then connect to form a graph. the second is the intercept method. kind of like plotting but easier. you will set x to zero then solve for y. then, set y to zero then solve for x...another ordered pair. plot these two pairs then connect to form a graph the third and last is the slope-intercept method which is used in a lot of equations. slope-intercept method is in the form y=mx + b where m is the slope and b is the y-intercept. the y-intercept i explained already so it can be plotted already. the slope is rise/run or y/x..what does this mean? it means from your y-intercept...you either go up or down certain units (if the numerator is positive go up; if negative go down) then go right or left certain units (if denominator is positive go right; left if negative). if your m is a whole number, it's denominator is automatically 1. remember that...lots of people make mistakes in that part
oohh ok thanks
information and text can be thrown at you all day long, the problem tho is that we cannot read our mind to ascertain what it is the you "still dont get". If you could express yourself in a cogent manner, then we could possibly provide you with something that is useful to your specific concerns.
i just dont get it how to solve functions but i actually know how to graph them i just dont know how to solve it