So first one 'how many solutions does 2x-y=-5 and 2x+y=5 have?' add and get 2x-y-5 plus 2x+y=5
equals 2x+2x+y-y=5-5 4x=0 x=0 always solve for y 4(0)+y=5 y=5 the solution is (0,5) only <u>ONE </u>solution
one way is to subsitute just remember that it is in (x,y) form so the pont (1,2) means that 1 solution is x=1 and y=2 so subsitute and find that the first one is the answer you are correct
just look at the graph the solution is the intersection it seems to be at a point that is 3 units to the right and -6 units up (6 units down) so the solution is (3,-6) yo are corect
subsitution y=y therefor the answe ris (-4,-14) if you did the math correctly
#8 is correct
# 9 is correct
# 10 the answe ris bananas=0.40 pears=0.60
the last one you got it wrong, remember to check your answer to the graph for commonsense then answer is (-2,5) and (1,2)
