Published by admin on September 15, 2020 10x=-90 multiplication principley=4 graphy+x=-10 graph3x+4y=26x+8y=4 elimination processy=9/7x+4 find slope and y-intercept 1+2x8x+9y=21x=7-2y substitution method-2x>1/9 multiplication principle7x-4y=-164y-7x=16Word problemsThe length of a rectangle is fixed at 17cm. What […]