Question 858043
standard form for a line is y = mx +b where m is the slope and b is the y axis intercept,
for example, y = 2x +1
a) say x = 1, then y = 3 (substitute for x in our example) and the point is (1, 3)
b) To find the y axis intercept let x = 0 and the intercept is (0, 1)
now solve our example for x, x = (y - 1) / 2, now let y = 0 and substitute in our equation for x to get the x axis intercept, (-1/2, 0)
c) rewrite our example in function notation, f(x) = 2x + 1
Graph is
{{{ graph( 300, 200, -10, 10, -10, 10, 2x + 1) }}}