MATH F.1

New Trend Mathematics S1B - Junior Form Supplementary Exercise P.12.14 第11題?

The graphs of the equation y=ax 1 and y=bx 5 intersect at C (-2,3).

(a) Find the values of a and b .

3 = a(-2) 1

a = -1


3 = b(-2) 5

b = 1

(b) Find the coordinates of A and B.

A(0,1) B(-5,0)

仲有part c架

(c) Hence find the area of the shaded region

1x5
一一
2

=2.5 square units

(a) Find the values of a and b .
3 = a(-2) + 1
a = -1
3 = b(-2) + 5
b = 1

(b) Find the coordinates of A and B.
A, B 邊點, 你都無, 點搵

A同B係咩黎架?