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GREYUIT [131]
3 years ago
14

9x - y = 45 solve for y

Mathematics
2 answers:
Lyrx [107]3 years ago
8 0
First you subtract 9x from y and you get 45 - 9x = -y and you don't want negatives so you switch all the signs to get y = -45 + 9x
prisoha [69]3 years ago
3 0

Answer:

y=9x-45

Step-by-step explanation:

Given: 9x-y=45

We are given an equation of x and y. We need to solve for y.

It means to isolate variable y. We have to move all variable and constant right side and leave y at left side.

9x-y=45

Subtract 9x both sides (Subtraction property of equality)

9x-9x-y=-9x+45

cancel like term

-y=-9x+45

Divide each side by -1 (Division property of equality)

y=9x-45

Hence, The equation solve for y=9x-45

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Solve the equation for the indicated variable<br> x - 3y for y
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7 0
3 years ago
TEXASCHIC! :)
nlexa [21]
(3,51)(5,59)
slope = (59 - 51) / (5 - 3) = 8/2 = 4

y = mx + b
slope(m) = 4
(3,51)...x = 3 and y = 51
sub and find b, the y int
51 = 4(3) + b
51 = 12 + b
51 - 12 = b
39 = b

so ur equation is : y = 4x + 39...but u need it in standard form

y = 4x + 39
-4x + y = 39
4x - y = -39 <==== this is ur equation...x = number of hrs and y = total velocity
====================
ur x axis is the number of hrs
ur y axis is total velocity in km

y = 4x + 39......slope = 4.....y int = (0,39)....x int is (- 9.75,0) or -9 3/4 for graphing purposes)....so start at (-9.75,0)...and since the slope is 4, go up 4 and to the right 1....plot that...then up 4 and to the right 1...plot that...u will cross the y axis at (0,39)....and just connect ur plotted points and u have ur line......or what u can do since it is asking for the first 6 hrs....sub in 1 for x and solve for y....then sub in 2 for x and solve for y...keep doing this up till 6 and u will have ur line up till 6 hrs
8 0
2 years ago
Solve for x. mx2 + y e = b
m_a_m_a [10]
X=(b/2m)*y-e is the answer I believe.
7 0
2 years ago
Read 2 more answers
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