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8. Is the line through points P(–7, 2) and Q(7, –6) parallel to the line through points R(–1, –5) and S(–3, –1)? Explain. (1 point)
No; one line has zero slope, the other has no slope.
Yes; the lines are both vertical.
Yes; the lines have equal slopes.
No; the lines have unequal slopes.
10. Plans for a bridge are drawn on a coordinate grid. One girder of the bridge lies on the line y = –9x – 9. A perpendicular brace passes through the point (–1, 7). Write an equation of the line that contains the brace. (1 point)
y – 1 = –(x + 7)
x – 7 = –9(y + 1)
y – 7 = (x + 1)
y – 7 = –9(
 one year ago
 one year ago
8. Is the line through points P(–7, 2) and Q(7, –6) parallel to the line through points R(–1, –5) and S(–3, –1)? Explain. (1 point) No; one line has zero slope, the other has no slope. Yes; the lines are both vertical. Yes; the lines have equal slopes. No; the lines have unequal slopes. 10. Plans for a bridge are drawn on a coordinate grid. One girder of the bridge lies on the line y = –9x – 9. A perpendicular brace passes through the point (–1, 7). Write an equation of the line that contains the brace. (1 point) y – 1 = –(x + 7) x – 7 = –9(y + 1) y – 7 = (x + 1) y – 7 = –9(
 one year ago
 one year ago

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drummerboyswagBest ResponseYou've already chosen the best response.1
Yes; the lines have equal slopes
 one year ago
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