Solve by Substitution
{
2
x
+
4
y
=
−
6
6
x
+
y
=
15
\displaystyle {\left\lbrace\begin{array}{ccccc} {2}{x}&+&{4}{y}&=&-{6}\\{6}{x}&+&{y}&=&{15}\end{array}\right.}
{
2
x
6
x
+
+
4
y
y
=
=
−
6
15
One solution:
No solution
Infinite number of solutions
Hint: Start by solving the second equation for y
Question Help:
Video
Submit
Try a similar question
License
[more..]
Enter your answer as a point. Example: (2,5.5172)