To solve this problem, we must remember that the formula for slope, represented by the variable m, is m = y2-y1/x2-x1, and slope-intercept form is y=mx + b, where the variable m again represents the slope and the variable b represents the y-intercept. First, we will solve for the slope by plugging in the values we are given in our ordered pairs into the formula and simplifying using subtracting and then division:
m = y2-y1/x2-x1 = (7-3)/(0-5) = 4/-5 = -4/5
The y-intercept is found where the x value is equal to 0, which is given to us in the point (0,7). This means that b = 7 because the variable b represents the y-intercept.
Now, we can substitute in these values into slope-intercept form to create our equation.
y = mx + b
y = -4/5x + 7
Therefore, your answer is y = -4/5x + 7.
Hope this helps!