Answer:
the value of x is 7.
Step-by-step explanation:
2+19=21
21÷3=7
Check:
3×7=21
21-2=19
Therefore, 7 is the answer.
The line contains (9,y) and (-6,3) Then y is 13
<em><u>Solution:</u></em>
Given that a line contains (9, y) and (-6, 3)
Slope of line is 
To find: y
<em><u>The slope of line is given as:</u></em>


<em><u>Substituting the values in formula,</u></em>

Substitute 

2(-6 - 9) = 3(3 - y)
Multiplying the terms with terms inside bracket
-12 - 18 = 9 - 3y
Move the variable to one side
-30 = 9 - 3y
On solving we get,
3y = 30 + 9
3y = 39
Divide both sides by 3, we get
y = 13
Thus y = 13
Answer:
y = 3/2x+3
Step-by-step explanation:
The y intercept is 3. That is where it crosses the y axis
The slope is
m= (y2-y1)/(x2-x1) and we have points(0,3) and (-2,0)
= (0-3)/(-2,0)
=-3/-2
=3/2
Using the slope intercept form of a line
y = mx +b where m is the slope and b is the y intercept
y = 3/2x+3
Answer:
x = -9, y =3
Step-by-step explanation:
x + 2y = -3
x - y = -12
Subtract to two equations to eliminate x
x + 2y = -3
-x + y = 12
---------------------
3y = 9
Divide each side by 3
3y/3 = 9/3
y = 3
Now we can find x
x-y =-12
x - 3 = -12
Add 3 to each side
x-3+3 = -12+3
x = -9