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3 years ago

Y =3x+2 is the equation of a straight line graph.where does it cross the y-axis

Mathematics

1 answer:

neonofarm [45]3 years ago

7 0

Cross the y-axis in x=0
therfore:
if x=0; y=3*0+2=2; ⇒ P(0,2)

solution: P(0,2).

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An equation in point slope form (2,1) and has a slope of m=2

Svet_ta [14]

Answer:

y=2x-3

Step-by-step explanation:

Since we know that the slope-intercept form is y=mx+b, we can plug in the formula with what we already know to find b!

In the coordinates (2,1):

2 is the x
1 is the y

Now, we will plug these numbers in:

1=2*2+b

1=4+b

b=-3

Now we can rewrite the equation since we found b:

y=2x-3

Hope this helped! :)

8 0

3 years ago

Anh earns $7.75 per hour working after school. He needs at least $290 for a stereo system. Write and solve an inequality that de

UkoKoshka [18]

Answer:

7.75 x Y $\geq$ 290

Step-by-step explanation:

we can do it backwards

290/7.75

about 37.42

so Y = 37.42 hours or higher

(thx for reminding me to round)

or Y can = 38

3 0

2 years ago

Read 2 more answers

(a) Suppose one house from the city will be selected at random. Use the histogram to estimate the probability that the selected

vodka [1.7K]

Answer:

a. 0.71

b. 0.9863

Step-by-step explanation:

a. From the histogram, the relative frequency of houses with a value less than 500,000 is 0.34 and 0.37

-#The probability can therefore be calculated as:

$P(500000)=P(x=0)+P(x=500)\\\\\\\\=0.34+0.37\\\\\\\\=0.71$

Hence, the probability of the house value being less than 500,000 is o.71

-From the info provided, we calculate the mean=403 and the standard deviation is 278 The probability that the mean value of a sample of n=40 is less than 500000 can be calculated as below:

$P(\bar X$

Hence, the probability that the mean value of 40 randomly selected houses is less than 500,000 is 0.9863

8 0

3 years ago

$35 to spend cake is $18 balloons are $4

Lera25 [3.4K]

Answer:

he spends $22 and has $13left

Step-by-step explanation:

3 0

2 years ago

What is the equal value of 2⁷

Andreas93 [3]

Answer:

128

Step-by-step explanation:

2 to the power of 7 means you multiply 2 seven times over

2*2*2*2*2*2*2 = 4*2*2*2*2*2= 8*2*2*2*2= 16*2*2*2= 32*2*2= 64*2 = 128

plz give brainliest

8 0

2 years ago