Answer:
y=-3x+7
Explanation:
The slope-intercept form formula is y=mx+b
m=slope
b=y-intercept
Now replace the slope and y-intercept with the number that is given
Slope is -3 so the equation will look like this: y=-3x+b
The y-intercept is 7 so the equation will look like this: y=-3x+7
Answer: y=-3x+7
Hope this helps!