Please help! Thanks!

Question

If the slope of the line through A(-7,4) and B(5,y) is -1/4, what is the value of y?

a. -1

b. 7

c. 9/2

d. 1

Answer 1

General Equation: y=ax+b

a is the slope of the line which is -1/4, b is the y intercep

so from the first point: 4=(-7)*(-1/4)+b ---------->b = 9/4

now let's see second point (5,y): y=5*(-1/4)+9/4

y=4/4=1

so the answer could be d.

hope helpful

Answer 2

Anna, slope is "rise/run" or (difference of y-values)/(difference of x-values)

In this case, -1/4 = (diff of y-values)/(difference of x-values)

Hope this helps--Andrew F.