Answer:
y = 25
Step-by-step explanation:
To find slope, we use this expression: [tex]\frac{y2-y1}{x2-x1}[/tex]
Since we already know the slope and are trying to figure out a y-value, we can input all of the values we do know in the expression and solve for the missing y.
[tex]\frac{y-1}{9-3}[/tex]=4
Simplify the denominator: [tex]\frac{y-1}{6}[/tex]=4
Multiply both sides by 6 to isolate the y - 1: y - 1 = 24
Add 1 to both sides to isolate the y: y = 25
y = 25
