Question

http://static.k12.com/eli/bb/821/-1/0/2_36605_45064/-1/ff9fbf75b1c3225583e2f05d162b9fabc53eb9a0/media/74b83859e5510f301e36f82403c1c5c8f1470dd0/mediaasset_670318_1.bmp


The following is the graph of -2x + y = 7. True or False?

Answer 1

Well, if you put 2x on the right side, then it will change the sign since you are adding 2x to the equation. The graph in the picture has a negative slope, so its not the same. Hence, false.

Answer 2

if you change that line equation into slope-intercept form, you'd get y=2x+7. so the slope SHOULD be 2. but when we find the slope of the line that's actually presented, with the points (4,-1) and (2,3) w find that the slope is -2. so it's false

Answer 3

we*

Answer 4

Solve 8x2 + 7x - 15 = - 7.