Answer:
y= -3x +5, y= 11, y= 5, y= -4.
Step-by-step explanation:
Well first you want to just find the equation of y like you said and subtract 3x from each side to get y by itself which gives you y= -3x +5. Then you plug in each x value for x separate times of course and solve each time to get your different values for y. I think this is what you're looking for if not I'm sorry.
Answer:
x=-5/4 or x=9/4
Step-by-step explanation:
2 - 4x = -7
-4x = -7 - 2
-4x = -9
x = 9/4
or
2 - 4x = 7
-4x = 7-2
-4x = 5
x = -5/4
Answer:
y = 3x + 2
Step-by-step explanation:
Let's identify two clear points on this line. I can see (0, 2) and (-1, -1)
First you want to find the slope of the line that passes through these points. To find the slope of the line, we use the slope formula: (y₂ - y₁) / (x₂ - x₁)
Plug in these values:
(-1 - 2) / (-1 - 0)
Simplify the parentheses.
= (-3) / (-1)
Simplify the fraction.
-3/-1
= 3
This is your slope. Plug this value into the standard slope-intercept equation of y = mx + b.
y = 3x + b
To find b, we want to plug in a value that we know is on this line: in this case, I will use the first point (0, 2). Plug in the x and y values into the x and y of the standard equation.
2 = 3(0) + b
To find b, multiply the slope and the input of x(0)
2 = 0 + b
Now, we are left with 0 + b.
2 = b
Plug this into your standard equation.
y = 3x + 2
This is your equation.
Hope this helps!
Answer:
x = y = 1,1
Step-by-step explanation:
x - y = 0 => x = y
3x + 7y = 11 => 3x + 7x = 11 <=> 10x = 11 <=> x = 1,1
=> y = 1,1 (because x = y)
Answer:
f(12) = 28
Step-by-step explanation:
All you have to do is plug in 12 as x.
f(12) = 2(12) + 4
= 24 +4
= 28
And you're done! :)