Question

Can you verify that this is correct?

#1 http://prntscr.com/aphe7n
#2http://prntscr.com/aphedv
#3http://prntscr.com/apheiu

Answer 1

#1 correct

Answer 2

what did you use for the 2nd one? substitution or elimination?

Answer 3

let me work that one our again @jdoe0001

Answer 4

number two is A (-1,-6)

Answer 5

It'd be helpful if you'd share your actual work, especially if you want feedback on what you've done right and what you may have done wrong.

If you have found a tentative solution, how would you check the accuracy of that solution on your own? Hint: try substitution.

Answer 6

for the 3rd question recall that slope = rise / run and a line like \ has negative slope.

Answer 7

for the second one, i used substitution. i had done that one in class and didnt realize what i did

Answer 8

-2 is incorrect for number 3.

Answer 9

oh so then number 3 would be d-1/2

Answer 10

thats right

Answer 11

Thanks to all, i have a lot more but i'll be posting in three's

Answer 12

No c is -1/2

Answer 13

well.... using elimination on the 2nd one
\(\begin{array}{lrclll}
2x-3y=16&\implies &2x\cancel{-3y}=16\\
5x-3y=13&{\color{red}{ \times -1}}\implies &-5x\cancel{+3y}=-13
\\\hline\\
&&-3x=3
\end{array}
\\ \quad \\
x=-1\qquad and\qquad 2(-1)-3y=16\implies \cfrac{-2-16}{3}=y\implies 6=y\)