linear functions and slope

Question

Give the slope and y-intercept of the line whose equation is given. Then graph the linear function.

f(x) = 4⁄5 x - 2

Answer 1

slope = the coefficient of the x term, when the equation is solved for y: 4/5 or 0.8

y intercept is the constant term, when the equation is solved for y: -2 or the point (0,-2)

the graph is a straight line, upward sloping

plot the point (0,-2) and the x intercept (5/2, 0) or (2.5, 0)

connect those 2 points with a line, extended forever in both directions. Put arrows on the ends of the line, to indicate the line goes forever