Answer:
y=3x+7
Explanation:
The equation of a line in slope-intercept form is:
y=mx+b
where m is the slope and b is the y-intercept.
We know the slope is 3, so we can substitute 3 in for m.
y=3x+b
We also know the y-intercept is (0,7). When writing the equation of a line in this form, we can ignore the x-coordinate of 0. Therefore, the y-intercept is also just 7. Substitute 7 in for b.
y=3x+7
The equation of a line with a slope of 3 and a y-intercept of (0,7) is y=3x+7