2x3-4x2+23=y

A.is(-4,-167) a solution? Show/explain
b.is(3,51) a point on the graph
c.give the y-intercept

A. Substitute those values into the equation, simplify does the left side = -167

b. again, put both values into the equation. Does the left side = 51, if so.. it is a point on the graph.

to find the y intercept. Let x = 0 and solve for y.