Final answer:
To write the point-slope form of a line, you use the formula y - y1 = m(x - x1), where m is the slope and (x1, y1) is a point on the line. The slope of the line passing through the points (0, -3) and (4, 1) is 1. The point (0, -3) is identified as (x1, y1) and the point-slope form of the line becomes y + 3 = x.
Step-by-step explanation:
a. The point-slope form of the equation is given by y - y1 = m(x - x1), where m is the slope of the line and (x1, y1) is a point on the line.
b. To find the slope, we use the formula m = (y2 - y1) / (x2 - x1). Using the points (0, -3) and (4, 1), we have m = (1 - (-3)) / (4 - 0) = 4 / 4 = 1.
c. The point (0, -3) has coordinates (x1, y1).
d. Substituting the values m = 1, x1 = 0, and y1 = -3 into the point-slope form, we get y - (-3) = 1(x - 0) simplifying further we find y + 3 = x.