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4vir4ik [10]
3 years ago
8

What is the value of the function y=2x−3 when x=−1 ?

Mathematics
2 answers:
san4es73 [151]3 years ago
7 0

Answer:  First option is correct.

Step-by-step explanation:

Since we have given that

y=2x-3

We need to find the value of the function .

As we have given that x= - 1

so, we substitute the value of x in y :

y=2x-3\\\\y=2(-1)-3\\\\y=-2-3\\\\y=-5

So, the value of the function is -5.

Hence, First option is correct.


Bad White [126]3 years ago
5 0

The answer is -5 I Just took the quiz

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3 years ago
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What are the roots of the equation?<br><br> x^2+24=−11x<br><br> Enter your answers in the boxes.
docker41 [41]
<span>The <u>correct answers</u> are:

x=-3 and x=-8.

Explanation<span>:

We can first write this in standard form, ax</span></span>²<span><span>+bx+c=0. To do this, we will add 11x to both sides:
x</span></span>²<span><span>+24+11x=-11x+11x
x</span></span>²<span><span>+11x+24=0.

Now we can factor this. Look for factors of c, 24, that sum to b, 11. Factors of 24 are:
1 and 24 (sum 25)
2 and 12 (sum 14)
3 and 8 (sum 11)
4 and 6 (sum 10).

The factors we need are 3 and 8, since they sum to 11. This gives us factored form:
(x+3)(x+8)=0.

Using the zero product property, we know that in order to have a product of 0, one or both of the factors must be 0. This means we have:
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Solving the first equation:
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x=-3.

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8 0
3 years ago
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Can someone help me with these please?
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Point-slope form: y-y1 = m(x-x1)

Standard form: ax + by = c

Slope-intercept form: y = mx+b


Start by finding the slope. We know it is negative since the line is decreasing. The slope is -4/3.


To create point-slope form, we need to get one point from the graph. Let's use (3,0).

y = -\frac{4}{3}(x-3)


To create slope-intercept form, we need the slope and the y-intercept. The y-intercept is the point where our equation crosses the y-axis. For this equation, it is 4.

y = -\frac{4}{3}x + 4


To get standard form, solve the equation in terms of C.


Point-slope form: y = -4/3(x-3)

Slope-intercept form: y = -4/3x + 4

Standard form: 4/3x + y = 4



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