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@welshfella can you help me ?
sorry that diagrams too small for my old eyes!!
i can make it bigger
is that better
yes just about one of the general form s of an equation of a straight line is y = mx + b where m = slope and b = intercept on y axis so an equation with slope 2 and y-intercept -2 would be y = 2x - 2
these 2 lines on your graph are parallel so they have the same slope If you count the squares vertically and horizontally form the same points you can find the slope
slope (m) = RISE/RUN b = y intercept
i still dont get it
Look at the top point of the blue line and count the number of squares until you get to the horizontal x-axis then count squares to the left until you come to point where the blue line cuts the x axis what counts do you get ?
6 is right - not 2
yep so the slope = 6/3 = 2
and where do the lines cut the y axis -at what value of y?
not 1 and 3 - they are below the 0 point
- on negative part of the y-axis
yes so the 2 equations are y = 2x - 1 and y = 2x - 3
I know they are not written in the same form as the above - which ones are they in the options?
no i gotta go right now - the correct equations for the last question are the first and second on the list