Question

Please I need like an explanation of how it was done.

Answer 1

Answer:

  the point is (3, 3) . . . . . . y = 3

Step-by-step explanation:

Write the point-slope equation of the line through the point you know. Then evaluate that equation for x=3 to see what the value of y is.

Point-slope form:

  y = m(x -h) +k . . . . slope m through point (h, k)

  y = -1/2(x -9) +0 . . . . line with slope -1/2 through point (9, 0)

For x=3, the value of y is ...

  y = -1/2(3 -9) + 0 = -1/2(-6) = 3

The value of y is 3.

Answer 2

Answer:

y=3

Step-by-step explanation:

When a line is said to pass from two sets of points say (x1,y1) and (x2,y2),the slope of the line is given by,

Slope,=(y2-y1)/(x2-x1)

Here, x1=9,x2=3,y1=0,y2=y

Given,slope=-1/2

So,slope=(y-0)/(3-9)=-1/2

or,y/-6=-1/2

or,2y=6

or,y=3 [ANS]