To practice, what if the two are added now? lets add one term at a time. first the x terms. 3x+x= 4x. then y+-3y=-2y. finally 3+-2=1. now putting them together we get 4x-2y=1.
multiplying the first equation by 3 gets us 9x+3y=9. basically multiplying each term by 3. now just do the same thing from the first part, so start with the new 9x+x and continue
The answer would be 8900
Reason: when you round to 2 significant figures you are trying to reduce the number to 2 digits and the rest will become 0 to indicate a place value
Remember to follow PEMDAS. (Parenthesis, Exponents (& roots), Multiplication, Division, Addition, Subtraction)
4^2 = 4 x 4 = 16
16/4 = 4
4 - 4 + 16
Combine
4 - 4 = 0 + 16 = 16
16 is your answer
hope this helps
3 x 5 is 15 multitply
Hope this helps!
Y=x is the answer alone, since it only crosses the origin
