exam Maths Puzzle Numerical Ability

Solve the system by addition.
2x - 4y = 7
4x + 2y = 9

Read Solution (Total 0)

exam Other Question

Please help me graph:
f(x)= -2x+2

What numbers do I put in excel to make it graph correctly?

THanks in advance :) Please help me with thses 2 problems and thanks

Factor completely: 9x^2-16y^2

Factor completely: 3x^2-2x-8